Impedance audiometry

2. Principle
 Transmission of sound in different media.
 Impedance –stiffness,mass and friction.
 Complaince.
 Pressure .1dkp=1.02mm of water.

4.  220 or 226hz .
 Pressure +300 to -600 mm water.
 Normal complaince-0.35 to 1.40 ml.
 Normal pressure- +50dkpa to -50dkpa.

12. Absolute,Relative,Compensated
tympanogram

13. Types of tympanogram-jergers
 -A Type
 -B Type
 -C Type

18. Normal tympanogram

19. Clinical scenarios
1

20. 2

21. 3

22. 4.

23. 5.

24. 6.

25. 7.

26. 8.

27. 9.

28. 10.

29. ACOUSTIC REFLEX
 -simple
 -non invasive
 -objective
 -Newborn babies

34. THANKYOU